A top-to-bottom relationship among the items in a database is establis

1.	A top-to-bottom relationship among the items in a database is established by a
A.	Hierarchical schema
B.	Network schema
C.	Relational schema
D.	All of the above
E.	None of the above
Answer» B. Network schema

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A top-to-bottom relationship among the items in a database is established by a

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